New Dart editor build available I leave here the original post.
A new Dart Editor build is available at
Support for method cascade syntax!
Added quick fix support (aka auto-resolution of issues). Our initial quick fixes are:
to automatically add library import directives, and
to fix issues where static methods are incorrectly referenced as instance methods.
Add a new refactoring: the ability to convert if-else statements to conditional expressions and vice-versa.
Better support for using package: imports and setting –package-root in the Editor.
Also, some fixes to auto-indent, fixes to the outline and apps views, rename refactoring fixes, and 7 analysis fixes.